From mboxrd@z Thu Jan 1 00:00:00 1970 From: Catalin Marinas Subject: [PATCH 1/5] ARM: Allow lazy cache flushing via PG_arch_1 for highmem pages Date: Tue, 20 Jul 2010 18:12:07 +0100 Message-ID: <20100720171207.19582.56915.stgit@e102109-lin.cambridge.arm.com> References: <20100720171201.19582.85920.stgit@e102109-lin.cambridge.arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Received: from cam-admin0.cambridge.arm.com ([217.140.96.50]:38893 "EHLO cam-admin0.cambridge.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751083Ab0GTRMZ (ORCPT ); Tue, 20 Jul 2010 13:12:25 -0400 In-Reply-To: <20100720171201.19582.85920.stgit@e102109-lin.cambridge.arm.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: FUJITA Tomonori , Russell King - ARM Linux , Nicolas Pitre Commit d73cd42 forced non-lazy cache flushing of highmem pages in flush_dcache_page(). This isn't needed since __flush_dcache_page() (called lazily from update_mmu_cache) can handle highmem pages (fixed by commit 7e5a69e). Signed-off-by: Catalin Marinas Acked-by: Nicolas Pitre --- arch/arm/mm/flush.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c index c6844cb..87dd5ff 100644 --- a/arch/arm/mm/flush.c +++ b/arch/arm/mm/flush.c @@ -247,7 +247,7 @@ void flush_dcache_page(struct page *page) mapping = page_mapping(page); #ifndef CONFIG_SMP - if (!PageHighMem(page) && mapping && !mapping_mapped(mapping)) + if (mapping && !mapping_mapped(mapping)) set_bit(PG_dcache_dirty, &page->flags); else #endif